* [PATCH] UefiCpuPkg/Microcode.c: Add verification before calculate CheckSum32 @ 2019-03-05 0:21 Chen A Chen 2019-03-06 2:15 ` Ni, Ray 0 siblings, 1 reply; 5+ messages in thread From: Chen A Chen @ 2019-03-05 0:21 UTC (permalink / raw) To: edk2-devel; +Cc: Chen A Chen, Ray Ni, Eric Dong REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1020 Should make sure the TotalSize of Microcode is aligned with 4 bytes before calling CalculateSum32 function. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Chen A Chen <chen.a.chen@intel.com> Cc: Ray Ni <ray.ni@intel.com> Cc: Eric Dong <eric.dong@intel.com> --- UefiCpuPkg/Library/MpInitLib/Microcode.c | 31 ++++++++++++++++++++----------- 1 file changed, 20 insertions(+), 11 deletions(-) diff --git a/UefiCpuPkg/Library/MpInitLib/Microcode.c b/UefiCpuPkg/Library/MpInitLib/Microcode.c index 5f9ae22794..643a6f94f4 100644 --- a/UefiCpuPkg/Library/MpInitLib/Microcode.c +++ b/UefiCpuPkg/Library/MpInitLib/Microcode.c @@ -166,20 +166,29 @@ MicrocodeDetect ( // CorrectMicrocode = FALSE; - // - // Save an in-complete CheckSum32 from CheckSum Part1 for common parts. - // if (MicrocodeEntryPoint->DataSize == 0) { - InCompleteCheckSum32 = CalculateSum32 ( - (UINT32 *) MicrocodeEntryPoint, - sizeof (CPU_MICROCODE_HEADER) + 2000 - ); + TotalSize = sizeof (CPU_MICROCODE_HEADER) + 2000; } else { - InCompleteCheckSum32 = CalculateSum32 ( - (UINT32 *) MicrocodeEntryPoint, - sizeof (CPU_MICROCODE_HEADER) + MicrocodeEntryPoint->DataSize - ); + TotalSize = sizeof (CPU_MICROCODE_HEADER) + MicrocodeEntryPoint->DataSize; } + + /// + /// Check overflow and whether TotalSize is aligned with 4 bytes. + /// + if ( ((UINTN)MicrocodeEntryPoint + TotalSize) > MicrocodeEnd || + (TotalSize & 0x3) != 0 + ) { + MicrocodeEntryPoint = (CPU_MICROCODE_HEADER *) (((UINTN) MicrocodeEntryPoint) + SIZE_1KB); + continue; + } + + // + // Save an in-complete CheckSum32 from CheckSum Part1 for common parts. + // + InCompleteCheckSum32 = CalculateSum32 ( + (UINT32 *) MicrocodeEntryPoint, + TotalSize + ); InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorSignature.Uint32; InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorFlags; InCompleteCheckSum32 -= MicrocodeEntryPoint->Checksum; -- 2.16.2.windows.1 ^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH] UefiCpuPkg/Microcode.c: Add verification before calculate CheckSum32 2019-03-05 0:21 [PATCH] UefiCpuPkg/Microcode.c: Add verification before calculate CheckSum32 Chen A Chen @ 2019-03-06 2:15 ` Ni, Ray 2019-03-06 5:35 ` Ni, Ray 0 siblings, 1 reply; 5+ messages in thread From: Ni, Ray @ 2019-03-06 2:15 UTC (permalink / raw) To: Chen, Chen A, edk2-devel@lists.01.org; +Cc: Dong, Eric Reviewed-by: Ray Ni <ray.ni@intel.com> > -----Original Message----- > From: edk2-devel <edk2-devel-bounces@lists.01.org> On Behalf Of Chen A > Chen > Sent: Tuesday, March 5, 2019 8:21 AM > To: edk2-devel@lists.01.org > Cc: Dong, Eric <eric.dong@intel.com> > Subject: [edk2] [PATCH] UefiCpuPkg/Microcode.c: Add verification before > calculate CheckSum32 > > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1020 > > Should make sure the TotalSize of Microcode is aligned with 4 bytes > before calling CalculateSum32 function. > > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Chen A Chen <chen.a.chen@intel.com> > Cc: Ray Ni <ray.ni@intel.com> > Cc: Eric Dong <eric.dong@intel.com> > --- > UefiCpuPkg/Library/MpInitLib/Microcode.c | 31 ++++++++++++++++++++-- > --------- > 1 file changed, 20 insertions(+), 11 deletions(-) > > diff --git a/UefiCpuPkg/Library/MpInitLib/Microcode.c > b/UefiCpuPkg/Library/MpInitLib/Microcode.c > index 5f9ae22794..643a6f94f4 100644 > --- a/UefiCpuPkg/Library/MpInitLib/Microcode.c > +++ b/UefiCpuPkg/Library/MpInitLib/Microcode.c > @@ -166,20 +166,29 @@ MicrocodeDetect ( > // > CorrectMicrocode = FALSE; > > - // > - // Save an in-complete CheckSum32 from CheckSum Part1 for common > parts. > - // > if (MicrocodeEntryPoint->DataSize == 0) { > - InCompleteCheckSum32 = CalculateSum32 ( > - (UINT32 *) MicrocodeEntryPoint, > - sizeof (CPU_MICROCODE_HEADER) + 2000 > - ); > + TotalSize = sizeof (CPU_MICROCODE_HEADER) + 2000; > } else { > - InCompleteCheckSum32 = CalculateSum32 ( > - (UINT32 *) MicrocodeEntryPoint, > - sizeof (CPU_MICROCODE_HEADER) + MicrocodeEntryPoint- > >DataSize > - ); > + TotalSize = sizeof (CPU_MICROCODE_HEADER) + MicrocodeEntryPoint- > >DataSize; > } > + > + /// > + /// Check overflow and whether TotalSize is aligned with 4 bytes. > + /// > + if ( ((UINTN)MicrocodeEntryPoint + TotalSize) > MicrocodeEnd || > + (TotalSize & 0x3) != 0 > + ) { > + MicrocodeEntryPoint = (CPU_MICROCODE_HEADER *) (((UINTN) > MicrocodeEntryPoint) + SIZE_1KB); > + continue; > + } > + > + // > + // Save an in-complete CheckSum32 from CheckSum Part1 for common > parts. > + // > + InCompleteCheckSum32 = CalculateSum32 ( > + (UINT32 *) MicrocodeEntryPoint, > + TotalSize > + ); > InCompleteCheckSum32 -= MicrocodeEntryPoint- > >ProcessorSignature.Uint32; > InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorFlags; > InCompleteCheckSum32 -= MicrocodeEntryPoint->Checksum; > -- > 2.16.2.windows.1 > > _______________________________________________ > edk2-devel mailing list > edk2-devel@lists.01.org > https://lists.01.org/mailman/listinfo/edk2-devel ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] UefiCpuPkg/Microcode.c: Add verification before calculate CheckSum32 2019-03-06 2:15 ` Ni, Ray @ 2019-03-06 5:35 ` Ni, Ray 2019-03-06 5:38 ` Gao, Liming 0 siblings, 1 reply; 5+ messages in thread From: Ni, Ray @ 2019-03-06 5:35 UTC (permalink / raw) To: edk2-devel@lists.01.org, Gao, Liming; +Cc: Dong, Eric, Ni, Ray, Chen, Chen A Liming, Do I need any approval from you side before pushing the commit? Thanks, Ray > -----Original Message----- > From: edk2-devel <edk2-devel-bounces@lists.01.org> On Behalf Of Ni, Ray > Sent: Wednesday, March 6, 2019 10:15 AM > To: Chen, Chen A <chen.a.chen@intel.com>; edk2-devel@lists.01.org > Cc: Dong, Eric <eric.dong@intel.com> > Subject: Re: [edk2] [PATCH] UefiCpuPkg/Microcode.c: Add verification > before calculate CheckSum32 > > Reviewed-by: Ray Ni <ray.ni@intel.com> > > > -----Original Message----- > > From: edk2-devel <edk2-devel-bounces@lists.01.org> On Behalf Of Chen A > > Chen > > Sent: Tuesday, March 5, 2019 8:21 AM > > To: edk2-devel@lists.01.org > > Cc: Dong, Eric <eric.dong@intel.com> > > Subject: [edk2] [PATCH] UefiCpuPkg/Microcode.c: Add verification > > before calculate CheckSum32 > > > > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1020 > > > > Should make sure the TotalSize of Microcode is aligned with 4 bytes > > before calling CalculateSum32 function. > > > > Contributed-under: TianoCore Contribution Agreement 1.1 > > Signed-off-by: Chen A Chen <chen.a.chen@intel.com> > > Cc: Ray Ni <ray.ni@intel.com> > > Cc: Eric Dong <eric.dong@intel.com> > > --- > > UefiCpuPkg/Library/MpInitLib/Microcode.c | 31 > ++++++++++++++++++++-- > > --------- > > 1 file changed, 20 insertions(+), 11 deletions(-) > > > > diff --git a/UefiCpuPkg/Library/MpInitLib/Microcode.c > > b/UefiCpuPkg/Library/MpInitLib/Microcode.c > > index 5f9ae22794..643a6f94f4 100644 > > --- a/UefiCpuPkg/Library/MpInitLib/Microcode.c > > +++ b/UefiCpuPkg/Library/MpInitLib/Microcode.c > > @@ -166,20 +166,29 @@ MicrocodeDetect ( > > // > > CorrectMicrocode = FALSE; > > > > - // > > - // Save an in-complete CheckSum32 from CheckSum Part1 for common > > parts. > > - // > > if (MicrocodeEntryPoint->DataSize == 0) { > > - InCompleteCheckSum32 = CalculateSum32 ( > > - (UINT32 *) MicrocodeEntryPoint, > > - sizeof (CPU_MICROCODE_HEADER) + 2000 > > - ); > > + TotalSize = sizeof (CPU_MICROCODE_HEADER) + 2000; > > } else { > > - InCompleteCheckSum32 = CalculateSum32 ( > > - (UINT32 *) MicrocodeEntryPoint, > > - sizeof (CPU_MICROCODE_HEADER) + > MicrocodeEntryPoint- > > >DataSize > > - ); > > + TotalSize = sizeof (CPU_MICROCODE_HEADER) + > > + MicrocodeEntryPoint- > > >DataSize; > > } > > + > > + /// > > + /// Check overflow and whether TotalSize is aligned with 4 bytes. > > + /// > > + if ( ((UINTN)MicrocodeEntryPoint + TotalSize) > MicrocodeEnd || > > + (TotalSize & 0x3) != 0 > > + ) { > > + MicrocodeEntryPoint = (CPU_MICROCODE_HEADER *) (((UINTN) > > MicrocodeEntryPoint) + SIZE_1KB); > > + continue; > > + } > > + > > + // > > + // Save an in-complete CheckSum32 from CheckSum Part1 for common > > parts. > > + // > > + InCompleteCheckSum32 = CalculateSum32 ( > > + (UINT32 *) MicrocodeEntryPoint, > > + TotalSize > > + ); > > InCompleteCheckSum32 -= MicrocodeEntryPoint- > > >ProcessorSignature.Uint32; > > InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorFlags; > > InCompleteCheckSum32 -= MicrocodeEntryPoint->Checksum; > > -- > > 2.16.2.windows.1 > > > > _______________________________________________ > > edk2-devel mailing list > > edk2-devel@lists.01.org > > https://lists.01.org/mailman/listinfo/edk2-devel > _______________________________________________ > edk2-devel mailing list > edk2-devel@lists.01.org > https://lists.01.org/mailman/listinfo/edk2-devel ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] UefiCpuPkg/Microcode.c: Add verification before calculate CheckSum32 2019-03-06 5:35 ` Ni, Ray @ 2019-03-06 5:38 ` Gao, Liming 2019-03-06 5:46 ` Ni, Ray 0 siblings, 1 reply; 5+ messages in thread From: Gao, Liming @ 2019-03-06 5:38 UTC (permalink / raw) To: Ni, Ray, edk2-devel@lists.01.org; +Cc: Dong, Eric, Chen, Chen A This is a bug. I agree to add it into Q1 stable tag. Thanks Liming > -----Original Message----- > From: Ni, Ray > Sent: Tuesday, March 5, 2019 9:35 PM > To: edk2-devel@lists.01.org; Gao, Liming <liming.gao@intel.com> > Cc: Dong, Eric <eric.dong@intel.com>; Ni, Ray <ray.ni@intel.com>; Chen, Chen A <chen.a.chen@intel.com> > Subject: RE: [edk2] [PATCH] UefiCpuPkg/Microcode.c: Add verification before calculate CheckSum32 > > Liming, > Do I need any approval from you side before pushing the commit? > > Thanks, > Ray > > > -----Original Message----- > > From: edk2-devel <edk2-devel-bounces@lists.01.org> On Behalf Of Ni, Ray > > Sent: Wednesday, March 6, 2019 10:15 AM > > To: Chen, Chen A <chen.a.chen@intel.com>; edk2-devel@lists.01.org > > Cc: Dong, Eric <eric.dong@intel.com> > > Subject: Re: [edk2] [PATCH] UefiCpuPkg/Microcode.c: Add verification > > before calculate CheckSum32 > > > > Reviewed-by: Ray Ni <ray.ni@intel.com> > > > > > -----Original Message----- > > > From: edk2-devel <edk2-devel-bounces@lists.01.org> On Behalf Of Chen A > > > Chen > > > Sent: Tuesday, March 5, 2019 8:21 AM > > > To: edk2-devel@lists.01.org > > > Cc: Dong, Eric <eric.dong@intel.com> > > > Subject: [edk2] [PATCH] UefiCpuPkg/Microcode.c: Add verification > > > before calculate CheckSum32 > > > > > > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1020 > > > > > > Should make sure the TotalSize of Microcode is aligned with 4 bytes > > > before calling CalculateSum32 function. > > > > > > Contributed-under: TianoCore Contribution Agreement 1.1 > > > Signed-off-by: Chen A Chen <chen.a.chen@intel.com> > > > Cc: Ray Ni <ray.ni@intel.com> > > > Cc: Eric Dong <eric.dong@intel.com> > > > --- > > > UefiCpuPkg/Library/MpInitLib/Microcode.c | 31 > > ++++++++++++++++++++-- > > > --------- > > > 1 file changed, 20 insertions(+), 11 deletions(-) > > > > > > diff --git a/UefiCpuPkg/Library/MpInitLib/Microcode.c > > > b/UefiCpuPkg/Library/MpInitLib/Microcode.c > > > index 5f9ae22794..643a6f94f4 100644 > > > --- a/UefiCpuPkg/Library/MpInitLib/Microcode.c > > > +++ b/UefiCpuPkg/Library/MpInitLib/Microcode.c > > > @@ -166,20 +166,29 @@ MicrocodeDetect ( > > > // > > > CorrectMicrocode = FALSE; > > > > > > - // > > > - // Save an in-complete CheckSum32 from CheckSum Part1 for common > > > parts. > > > - // > > > if (MicrocodeEntryPoint->DataSize == 0) { > > > - InCompleteCheckSum32 = CalculateSum32 ( > > > - (UINT32 *) MicrocodeEntryPoint, > > > - sizeof (CPU_MICROCODE_HEADER) + 2000 > > > - ); > > > + TotalSize = sizeof (CPU_MICROCODE_HEADER) + 2000; > > > } else { > > > - InCompleteCheckSum32 = CalculateSum32 ( > > > - (UINT32 *) MicrocodeEntryPoint, > > > - sizeof (CPU_MICROCODE_HEADER) + > > MicrocodeEntryPoint- > > > >DataSize > > > - ); > > > + TotalSize = sizeof (CPU_MICROCODE_HEADER) + > > > + MicrocodeEntryPoint- > > > >DataSize; > > > } > > > + > > > + /// > > > + /// Check overflow and whether TotalSize is aligned with 4 bytes. > > > + /// > > > + if ( ((UINTN)MicrocodeEntryPoint + TotalSize) > MicrocodeEnd || > > > + (TotalSize & 0x3) != 0 > > > + ) { > > > + MicrocodeEntryPoint = (CPU_MICROCODE_HEADER *) (((UINTN) > > > MicrocodeEntryPoint) + SIZE_1KB); > > > + continue; > > > + } > > > + > > > + // > > > + // Save an in-complete CheckSum32 from CheckSum Part1 for common > > > parts. > > > + // > > > + InCompleteCheckSum32 = CalculateSum32 ( > > > + (UINT32 *) MicrocodeEntryPoint, > > > + TotalSize > > > + ); > > > InCompleteCheckSum32 -= MicrocodeEntryPoint- > > > >ProcessorSignature.Uint32; > > > InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorFlags; > > > InCompleteCheckSum32 -= MicrocodeEntryPoint->Checksum; > > > -- > > > 2.16.2.windows.1 > > > > > > _______________________________________________ > > > edk2-devel mailing list > > > edk2-devel@lists.01.org > > > https://lists.01.org/mailman/listinfo/edk2-devel > > _______________________________________________ > > edk2-devel mailing list > > edk2-devel@lists.01.org > > https://lists.01.org/mailman/listinfo/edk2-devel ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH] UefiCpuPkg/Microcode.c: Add verification before calculate CheckSum32 2019-03-06 5:38 ` Gao, Liming @ 2019-03-06 5:46 ` Ni, Ray 0 siblings, 0 replies; 5+ messages in thread From: Ni, Ray @ 2019-03-06 5:46 UTC (permalink / raw) To: Gao, Liming, edk2-devel@lists.01.org; +Cc: Dong, Eric, Chen, Chen A Pushed @ 219e560c20034843ac9917146c60db99bd01b6f4. > -----Original Message----- > From: Gao, Liming <liming.gao@intel.com> > Sent: Wednesday, March 6, 2019 1:38 PM > To: Ni, Ray <ray.ni@intel.com>; edk2-devel@lists.01.org > Cc: Dong, Eric <eric.dong@intel.com>; Chen, Chen A > <chen.a.chen@intel.com> > Subject: RE: [edk2] [PATCH] UefiCpuPkg/Microcode.c: Add verification > before calculate CheckSum32 > > This is a bug. I agree to add it into Q1 stable tag. > > Thanks > Liming > > -----Original Message----- > > From: Ni, Ray > > Sent: Tuesday, March 5, 2019 9:35 PM > > To: edk2-devel@lists.01.org; Gao, Liming <liming.gao@intel.com> > > Cc: Dong, Eric <eric.dong@intel.com>; Ni, Ray <ray.ni@intel.com>; > > Chen, Chen A <chen.a.chen@intel.com> > > Subject: RE: [edk2] [PATCH] UefiCpuPkg/Microcode.c: Add verification > > before calculate CheckSum32 > > > > Liming, > > Do I need any approval from you side before pushing the commit? > > > > Thanks, > > Ray > > > > > -----Original Message----- > > > From: edk2-devel <edk2-devel-bounces@lists.01.org> On Behalf Of Ni, > > > Ray > > > Sent: Wednesday, March 6, 2019 10:15 AM > > > To: Chen, Chen A <chen.a.chen@intel.com>; edk2-devel@lists.01.org > > > Cc: Dong, Eric <eric.dong@intel.com> > > > Subject: Re: [edk2] [PATCH] UefiCpuPkg/Microcode.c: Add verification > > > before calculate CheckSum32 > > > > > > Reviewed-by: Ray Ni <ray.ni@intel.com> > > > > > > > -----Original Message----- > > > > From: edk2-devel <edk2-devel-bounces@lists.01.org> On Behalf Of > > > > Chen A Chen > > > > Sent: Tuesday, March 5, 2019 8:21 AM > > > > To: edk2-devel@lists.01.org > > > > Cc: Dong, Eric <eric.dong@intel.com> > > > > Subject: [edk2] [PATCH] UefiCpuPkg/Microcode.c: Add verification > > > > before calculate CheckSum32 > > > > > > > > REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1020 > > > > > > > > Should make sure the TotalSize of Microcode is aligned with 4 > > > > bytes before calling CalculateSum32 function. > > > > > > > > Contributed-under: TianoCore Contribution Agreement 1.1 > > > > Signed-off-by: Chen A Chen <chen.a.chen@intel.com> > > > > Cc: Ray Ni <ray.ni@intel.com> > > > > Cc: Eric Dong <eric.dong@intel.com> > > > > --- > > > > UefiCpuPkg/Library/MpInitLib/Microcode.c | 31 > > > ++++++++++++++++++++-- > > > > --------- > > > > 1 file changed, 20 insertions(+), 11 deletions(-) > > > > > > > > diff --git a/UefiCpuPkg/Library/MpInitLib/Microcode.c > > > > b/UefiCpuPkg/Library/MpInitLib/Microcode.c > > > > index 5f9ae22794..643a6f94f4 100644 > > > > --- a/UefiCpuPkg/Library/MpInitLib/Microcode.c > > > > +++ b/UefiCpuPkg/Library/MpInitLib/Microcode.c > > > > @@ -166,20 +166,29 @@ MicrocodeDetect ( > > > > // > > > > CorrectMicrocode = FALSE; > > > > > > > > - // > > > > - // Save an in-complete CheckSum32 from CheckSum Part1 for > common > > > > parts. > > > > - // > > > > if (MicrocodeEntryPoint->DataSize == 0) { > > > > - InCompleteCheckSum32 = CalculateSum32 ( > > > > - (UINT32 *) MicrocodeEntryPoint, > > > > - sizeof (CPU_MICROCODE_HEADER) + 2000 > > > > - ); > > > > + TotalSize = sizeof (CPU_MICROCODE_HEADER) + 2000; > > > > } else { > > > > - InCompleteCheckSum32 = CalculateSum32 ( > > > > - (UINT32 *) MicrocodeEntryPoint, > > > > - sizeof (CPU_MICROCODE_HEADER) + > > > MicrocodeEntryPoint- > > > > >DataSize > > > > - ); > > > > + TotalSize = sizeof (CPU_MICROCODE_HEADER) + > > > > + MicrocodeEntryPoint- > > > > >DataSize; > > > > } > > > > + > > > > + /// > > > > + /// Check overflow and whether TotalSize is aligned with 4 bytes. > > > > + /// > > > > + if ( ((UINTN)MicrocodeEntryPoint + TotalSize) > MicrocodeEnd || > > > > + (TotalSize & 0x3) != 0 > > > > + ) { > > > > + MicrocodeEntryPoint = (CPU_MICROCODE_HEADER *) (((UINTN) > > > > MicrocodeEntryPoint) + SIZE_1KB); > > > > + continue; > > > > + } > > > > + > > > > + // > > > > + // Save an in-complete CheckSum32 from CheckSum Part1 for > > > > + common > > > > parts. > > > > + // > > > > + InCompleteCheckSum32 = CalculateSum32 ( > > > > + (UINT32 *) MicrocodeEntryPoint, > > > > + TotalSize > > > > + ); > > > > InCompleteCheckSum32 -= MicrocodeEntryPoint- > > > > >ProcessorSignature.Uint32; > > > > InCompleteCheckSum32 -= MicrocodeEntryPoint->ProcessorFlags; > > > > InCompleteCheckSum32 -= MicrocodeEntryPoint->Checksum; > > > > -- > > > > 2.16.2.windows.1 > > > > > > > > _______________________________________________ > > > > edk2-devel mailing list > > > > edk2-devel@lists.01.org > > > > https://lists.01.org/mailman/listinfo/edk2-devel > > > _______________________________________________ > > > edk2-devel mailing list > > > edk2-devel@lists.01.org > > > https://lists.01.org/mailman/listinfo/edk2-devel ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2019-03-06 5:46 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2019-03-05 0:21 [PATCH] UefiCpuPkg/Microcode.c: Add verification before calculate CheckSum32 Chen A Chen 2019-03-06 2:15 ` Ni, Ray 2019-03-06 5:35 ` Ni, Ray 2019-03-06 5:38 ` Gao, Liming 2019-03-06 5:46 ` Ni, Ray
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